Title:
液中プラズマでの電熱製錬を使用する亜鉛及び鉛産業の副産物からの非鉄金属の回収
Document Type and Number:
Japanese Patent JP5183638
Kind Code:
B2
Abstract:
This invention relates to a single-step pyrometallurgical process for the recovery of non-ferrous metals from zinc bearing residues, in particular from by-products of the zinc and lead industry such as goethite and jarosite. A process for the recovery of metals from industrial Zn residues containing Zn, Fe and S is defined, wherein Zn is fumed, Fe is slagged, and S is oxidized to SO2, characterized in that the Zn fuming, the Fe slagging, and the S oxidation are performed in a single step process, by smelting the residues in a furnace comprising at least one submerged plasma torch generating an oxidizing gas mixture, and by feeding a solid reducing agent to the melt. The process achieves the oxidation of S and the slagging of Fe, while simultaneously achieving the reduction and the fuming of metals such as Zn.
Inventors:
Maurits Van Kamp
Peter Fergutz
Peter Fergutz
Application Number:
JP2009535006A
Publication Date:
April 17, 2013
Filing Date:
October 18, 2007
Export Citation:
Assignee:
Umicore S.A.
International Classes:
C22B7/00; C22B5/10; C22B5/16; C22B15/02; C22B19/30; C22B41/00; C22B58/00; F27D11/08
Domestic Patent References:
| JP4507265A | ||||
| JP57158336A |
Foreign References:
| WO2005031014A1 |
Attorney, Agent or Firm:
Toshio Yano
Takuya Kuno
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Takuya Kuno
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard